TGA

Implements the Truevision Graphics bitmap file format (*.tga) with some extra capabilities at the cost of making them unusable in applications not implementing these features: <ul> <li>Capability of storing 1, 2, and 4 bit indexed images.</li> <li>External color map support.</li> <li>More coming soon such as more advanced compression methods.</li> </ul> Accessing developer area is fully implemented, accessing extension area is partly implemented.

class TGA : Image, ImageMetadata {

TGAHeader header;

TGAFooter footer;

char[] imageID;

ExtArea[] extensionArea;

DevAreaTag[] developerAreaTags;

DevArea[] developerArea;

uint[] scanlineTable;

ubyte[] postageStampImage;

ushort[] colorCorrectionTable;

this(TGAHeader header, ubyte[] imageData, ubyte[] paletteData = null, char[] imageID = null);

this(TGAHeader header, TGAFooter footer, ubyte[] imageData, ubyte[] paletteData = null, char[] imageID = null);

static TGA load(FILE file);

void save(FILE file);

ubyte[] getPixelOrder();

ubyte[] getPixelOrderBitshift();

void createExtensionArea();

DevAreaTag getDevAreaInfo(size_t n);

DevArea getEmbeddedData(size_t n);

void addEmbeddedData(ushort ID, ubyte[] data);

ubyte getImageType();

TGAHeader getHeader();

}

Constructors

this this(TGAHeader header, ubyte[] imageData, ubyte[] paletteData = null, char[] imageID = null): Creates a TGA object without a footer.
this this(TGAHeader header, TGAFooter footer, ubyte[] imageData, ubyte[] paletteData = null, char[] imageID = null): Creates a TGA object with a footer.

Members

Functions

addEmbeddedData void addEmbeddedData(ushort ID, ubyte[] data): Creates an embedded field within the TGA file.
createExtensionArea void createExtensionArea(): Adds extension area for the file.
getDevAreaInfo DevAreaTag getDevAreaInfo(size_t n): Returns the developer area info for the field.
getEmbeddedData DevArea getEmbeddedData(size_t n): Returns the embedded field.
getHeader TGAHeader getHeader(): Returns the header as a reference type.
getImageType ubyte getImageType(): Returns the image type.
getPixelOrder ubyte[] getPixelOrder(): Returns the pixel order for bitdepths less than 8. Almost excusively used for indexed bitmaps. Returns null if ordering not needed.
getPixelOrderBitshift ubyte[] getPixelOrderBitshift(): Returns which pixel how much needs to be shifted right after a byteread.
save void save(FILE file): Saves the current TGA object into a Truevision TARGA file. If ignoreScanlineBounds is true, then the compression methods will ignore the scanline bounds, this disables per-line accessing, but enhances compression rates by a margin in exchange. If false, then it'll generate a scanline table.

Static functions

load TGA load(FILE file): Loads a Truevision TARGA file and creates a TGA object. FILE can be either std.stdio's file, my own implementation of a virtual file (see ziltoid1991/vfile), or any compatible solution.

Variables

colorCorrectionTable ushort[] colorCorrectionTable;: color correction table
postageStampImage ubyte[] postageStampImage;: byte 0 is width, byte 1 is height
scanlineTable uint[] scanlineTable;: stores offset to scanlines

TGA

Constructors

Members

Functions

Static functions

Variables

Meta

Source